Installation; Operation; Led Status Monitors - Patton electronics 1180/35 User Manual

4.0 INSTALLATION

The Model 1180/35 is easy to install. After configuring the DIP
switches, simply connect the single fiber cable, hook up the V.35
interface, and plug the power supply adapter into the 1180/35. Figure 4
(below) shows the location of the interface connections on the Model
1180/35 rear panel.
Figure 4. Rear Panel of Model 1180/35 Showing Interface Connections
4.1 SINGLE FIBER CONNECTION
These short range modems are designed to work in pairs. You will
need one at each end of single multi-mode fiber cable. Depending
upon the data rate setting you select, your cable may be a maximum of
1.5 or 3 miles long. The fiber cable connects to each Model 1180/35
using either an ST or an SMA connector. Figure 5 (below) shows a
close-up of both connector types.
Figure 5. Close-up of ST and SMA Connections
4.2 V.35 CONNECTION
The Model 1180/35 is configured as a DCE. Therefore it "wants" to
DTE hardware such as a PC, host or terminal, using a straight through
V.35 cable. Connecting the Model 1180/35 to DCE hardware such as a
modem, multiplexer, or printer, requires a null modem V.35 cable.
Contact Patton Technical Support at (301) 975-1007 for more
information about constructing the appropriate null modem cable for
your application.
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alignment pin
faces down

5.0 OPERATION

Once you have configured each Model 1180/35 properly and
connected the fiber and V.35 cables, you are ready to operate the units.
This section describes reading the LED status monitors, power-up, and
using the built-in loopback test modes.

5.1 LED STATUS MONITORS

The Model 1180/35 features six front panel status LEDs that
indicate the condition of the modem and communication link. Figure 6
(below) shows the front panel location of each LED.
Figure 6. Front view of Model 1180/35
• The green "Power" LED glows if power is applied to the modem.
• The green "Test Modes" LED indicates that the modem is in a test
mode (local analog or remote digital).
• The "TD" and "RD" indicators blink red and green with data activity.
Red indicates a low V.35 logic level, green indicates a high V.35
logic level. Note: V.35 devices idle in a low state, so the LED will
glow red if the connections are correct and the V.35 device is in an
idle state.
• The "RTS" and "CD" indicators are also tri-state and will glow red for
a "low" signal or green for a "high" signal. RTS lights for an
incoming signal on V.35 pin C. CD lights for an incoming signal on
the line side, and the resulting output signal on V.35 pin F.
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